*{
    box-sizing: border-box;
}
body{
    background-color: white;
}
h1{
    margin: 10px 0 10px;
    text-align: center;
}
.container{
    max-width: 600px;
    margin:0 auto;
}
.feq{
    background-color:gray;
    border: 1px solid #9fa4a8;
    border-radius: 10px;
    margin: 20px 0;
    padding:30px;
    position: relative;
    overflow: hidden;
    transition: 0.3s ease;
}
.active{
    background:white;
    box-shadow: 0 3px 6px rgba(0,0,0,0.1),0 3px 6px rgba(0,0,0,0.1);

}
.active::before,
.active::after{
    content:'\f075';
    font-family: 'Font Awesome 5 free';
    color:#2ecc71;
    font-size:7rem;
    position: absolute;
    opacity: 0.2;
    top:20px;
    left:20px;
    z-index: 0;
}
.active::before{
    color:#3498db;
    top:-10px;
    left:-30px;
    transform: rotateY('180');
}
.faq-titile{
    margin:0 35px 0 0;
}
.faq-text{
    display: none;
    margin: 30px 0 0;
}
.active .faq-text{
    display: block;
}
.btn{
    background-color: transparent;
    border:0;
    border-radius: 50;
    cursor: pointer;
    position: absolute;
    display: flex;
    font-size: 16px;
    top:30px;
    right:30px;
    height: 30px;
    width: 30px;
    display: flex;
    align-items: center;
    justify-content: center;

}
.btn:focus{
    outline: none;
}
.btn guanbi{
    display: none;
}
.active .btn guanbi{
    color: white;
    display: block;
}
.active .btn{
    background-color: #9fa4a8;
}
.active .btn xiala{
    display: none;
}